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What is the correct order of magnetic strength among the following elements?(a) Fe > Co > Ni > Cu(b) Fe > Ni > Co > Cu(c) Cu > Ni > Co > Fe(d) Cu > Fe > Ni > CoI got this question during an interview.The origin of the question is Solid State Magnetic Properties in chapter Solid State of Chemistry – Class 12

Answer»

Correct choice is (a) Fe > Co > Ni > Cu

The explanation: MAGNETIC strength depends on the NUMBER of UNPAIRED electrons possessed by the element. Iron, Cobalt, Nickel and Copper have 4, 3, 2 and 1unpaired electron respectively. Hence, the correct ORDER of magnetic strength is: Fe > Co > Ni > Cu.



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